Bending rolls



Aug. 4, 1925. 1,548,766

. R. w. SMITH BENDING ROLLS Filed Aug. 21. 1924 3 Sheets Sheet 1 R. w. SMITH BENpme RoLLs Filed Aug. 21, 1924 3 Sheets-Sheet 2 hwe z 1 wwrwq Aug. 4, 1925.

R. w. SMITH 1 BENDING ROLLS h Filed Aug. 21; 1924 Sheets-Sheet 3 Patented Aug. 1925..

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RoBEn r W. s ITm'o-n wlniums-ron, DELAWARE, nssrenon TO oonsonrna'rnn MA- CHINE TOOL CORPORATION on AMERICA, F WILMING'roN, DELA ARE, A conrona'rron or DELAWARE.

BENDING ROLLS.

Application filed August 21, 1924 Serial- No. 733,392.

To all whom, it may concern-.1

' Be it known that I, ROBERT V SMITH, a. citizen of the United States, residing in Wilmington, New Castle County, Delaware,

have invented certain Improvements in' Bending Rolls, of which the following is a specification.

This invention relates to certain improvements'in rolls for bending metallic plates,

in which the plates are passed between a pair of lower rolls and an upper roll,

The object of'the invention-is to construct the machine so that the upper roll can be raised or lowered and moved horizontally 16 by independent mechanism. i

The invention also relates to certain details, which will be fully described hereinafter.

' In the accompanying drawings:

Fig. l is' a plan View of my improved bending rolls; v

Fig. 2 is'ia side view;

Fig. 3 is an end view; and i Fig. 4 is a transverse sectional View on the line 44c, ig. 2.

The bed plate l supports the two fixed housings 2, 2 in which are bearings for the'two lower bending rolls 3, 3. These rolls'ar'e fixed as regards position. All adjustments are accomplished. by shifting the upper r0114, which is normally above the space between the two lower rolls. On the inner end of each lowerroll 3 is a gear wheel 5. The two gear wheels mesh with a pinion 6 on'a shaft 7 having its bearings in the housing 2 and a housing 8 at the end of theb'ed plate 1. On the shaft 7 is agea r wheel 9, which meshes with a pinion 10 on a short shaft 11, mounted in bearings 12and 13. A gear wheel 14 on the shaft 11 meshes with a pinion '15 on a shaft 16 on which is a gear wheel '17 that meshes with a pinion 18 on the shaft o-f an electric motor 19 Other means of driving the .two lower rfojlls may be used, if desired. i

the two housings 2, 2? are guides 20 for knees or carriers 21, 21%. The knees or carriers have transverse slide-ways 22 for adjustable brackets or housings" 23 23 The adjustable housing 23 has a pivoted bearing 2a for the inner end of the upper roll 4." The adjustable housing 23 is forked at its upper end to receive the hearing,

which s" a riedby "the ri et rai 9 "5 3 1 the adjustable housing 23 is a bearing 26,

which is pivoted at 27, This bearing supports the outer end of the roll a and can be turned on its pivot clear 'of the roll by the air hoist 28. The cylinder 29 'of the air hoist is pivoted at 30 to an extension 31 of the housing 23* The piston rod'82 is attached to the upper end of the bearing 26, Fig. 2. l i T Extending through each adjustable housing 28', 23 is a screw shaft-33, on which is a. worm wheel 34 with which meshes a worm 35 on'a longitudinal shaft 36. On the outer end of the shaft 36 is a gear wheel 37', which meshes with a pinion 38 on the shaft of an electric motor 40, which is'carried by a bracket 39 "that extends from the carrier 21. "The knees or carriers 21, 21 are raised and lowered by worm wheels &1, whose hubs are threaded for the passage of screws 42 that project from the under sides of the carriers. The worm wheels l are located between the under side of the fixed housings 2, 2" andstirrups 2 which are secured to the housings. A. longitudinal shaft 43 is mounted in suitable bearings in the bed plate" '1. On the shaft are worms 't h'which mesh with the worm wheels 41. On the shaft 43 is a gear wheel 45, which meshes with a pinion 46 on a shaft 47 that'is driven by an electric motor LS through 'a' gearing 49. The roll 4 has a portion 50 that projects beyond. the housing 2: portion is engaged by a retaining device 51, of any suitable construction, which acts to hold the overhanging roll l when the bearing'26" is withdrawn to place a platein position, or to remove a plate from the rolls. It will lie-observed that the retaiiiingdevice 51 includes a horizontal barwhich engages the projection 50 and which is of sufiicient length to permit the'horizontal adjustment which has been described? From the" construction hereinbefore described, it will be selen'that I enabledto makeen apparatus'forbenidihg plates, in which two lower rolls are used, in combination with a singleupper roll, and in which tlieuippe'r roll can be adjustedverticallyto and from the lower rolls and can be adjusted horizontally in respect to either of the lower rate The e enemas a hide This projecting "1 the front edge and a similar section adjacent from.

the rear edge remained; approximately straight. With my improved. construction I can avoid this condition by moving the top roll laterally first to one side and then to the other so as to secure the desired bending of the edge portions of the plate. It will be clear that this lateral movement can be made without in any way affecting the vertical adjustment which can be allowed to remain at the position required for the desired curvature.

When itis desired to remove the outer bearing of the upper roll, this is accomplished by actuating the air hoist, the piston of which is connected to the pivoted bearing so that the bearing can be turned on its pivot clear of the trunnions of the upper roll to allow plates to be placed in position at the end of the machine, or removed there- I claim: I r

1. The combination in bending rolls, of a bed plate; housings on the bed plate; a pair of lower rolls mounted in the housings; a carrier adjustable vertically on each housing; a laterally adjustable housing on each carrier; an upper roll mounted in the-adjustable housing; and means for driving the rolls.

2. The combination in bending rolls, of a bed plate; two housings thereon; a pair of lower rolls mounted in the housings; means for driving said rolls; a vertical guide on each housing; a carrier mounted on each housing and arranged to slide on the guide; means for raising and lowering the carriers; transverse guides on the respective carriers; adjustable housings mounted on and movable along the guides of the respective carriers and provided with bearings; :means for moving the ad ustable housings on the transverse guides; and an upper roll mounted in the said bearings carried by the adjustable housings.

3. The combination in a plate bending machine, of separated upright housings; two parallel horizontal rolls rotatably mounted on the said housings; two knees mounted for vertical adjustment on the respective housings, one of the knees being at the inner side of the corresponding housing and below the said rolls; two brackets mounted .for lateral horizontal adjustment on the respective knees, one bracket being arched to surround and extend over the twosaid rolls; a third roll rotatably mounted on the said brackets above the first said rolls; and means for rotating the rolls.

4. The combination in a plate bending machine, of separated upright housings; two parallel horizontal rolls rotatably mounted on the said housings; two knees mounted for vertical adjustment on the respective housings; two brackets mounted for lateral horizontal adjustment on the respective knees; a third roll rotatably mounted on the said brackets; means for rotating the rolls; and means operatively connected with the two bracketsfor moving them laterally on the knees simultaneously and at uniform rates. i

5. The combination in a plate bendingmachine, of separated upright housings; two parallel horizontal rolls rotatably mounted on the said housings; two knees mounted for vertical adjustment on the respective housings; two brackets mounted for lateral horizontal adjustment on the respective knees; a third roll rotatably mounted on the said brackets; means for rotating the rolls; and means operatively connectedwith the two brackets for moving them laterally on the knees simultaneously and at uniform rates, the last said means including a motor carried by one of the knees.

6. The combination in. bending rolls, of a bed plate; housings secured theretoand provided with bearings; lower rolls mounted in the said hearings in the housings; means for driving both lower rolls; vertical guides for each housing; a carrier mounted on each guide; means for raising and lowering the carriers inunison, said carriers having transverse guideways; an adjustable housing mountedlon each transverse guideway of the carriers; a horizontal screw shaft engaging each adjustable'housing; aworm wheel on 'each screw shaft; a longitudinal shaft having two worms thereon, "one meshing with one worm wheel and the other meshing with the other worm wheel; an independent motor for driving said shaft; and an upper roll mounted in the bearings in the adjustable housings. i

7.'The combination in a plate bending machine, of separated upright housings; two parallel horizontal rolls rotatablymounted on the said housings; two knees mounted for vertical adjustment on thezr'espective housings; two brackets mounted for lateral horizontal adjustment on the respective knees; a third roll rotatably mounted on the said brackets; means for rotating the rolls; means operatively connected with the two knees for raising or lowering them simultaneously and at uniform rates; and means operatively connected with the two brackets for moving them laterally on the knees simultaneously and at uniform rates,

I 8. The combination in a plate bending machine, of a base; separated upright housings on the base; two parallel horizontal rolls rotatably mounted on the said housings; two knees mounted for vertical adjustment on the respective housings; two brackets mounted for lateral horizontal adjustment on the respective knees; a third roll rotatably mounted on the said brackets; means for rotating the rolls; means operatively connected with the two knees for raising or lowering them simultaneously and at uniform rates, the said means including a motor on the base; and means operatively connected with the two brackets for moving them laterally on the knees simultaneously and at uniform rates.

9. The combination in a plate bending machine of two parallel rolls rotatable about normally fixed axes in the same horizontal plane; a third rotatable roll normally parallel with the first said rolls; a transversely pivoted bearing for one end of the last said roll; a removable bearing for the other end of the said roll; means for effecting the lateral horizontal adjustment of the said bearings; a projection at the first said end of the roll; and means engaging the projection for supporting the roll when the removable bearing is removed, the said means remaining operative for different positions of horizontal adjustment of the bearings.

10. The combination in a plate bending machine, of two parallel rolls rotatable about normally fixed axes in the same horizontal plane, a third rotatable roll normally parallel with the first said rolls; a trans versely pivoted bearing for one end of the last said roll; a removable bearing for the other end of the said roll; means for adjusting the said bearings both vertically and horizontally; a projection at the first said end of the roll; and means engaging the projection for supporting the roll when the removable bearing is removed, the last said means being vertically adjustable to conform tothe vertical adjustment of the bearings and remaining operative for differentpositions of horizontal adjustment of the bearings.

11. The combination in a plate bending machine of separated upright housings; two parallel horizontal rolls rotatably mounted on the said housings; two knees mounted for vertical adjustment on the respective housings, one of the knees being at the inner side of the corresponding housing and below the said rolls and the other of the said knees being at the outer side of the corresponding housing; two brackets mounted for lateral horizontal adjustment on the respective knees, the bracket on the first said knee being arched to surround and extend over the two said rolls; a third roll; a transversely pivoted bearing on the first said bracket for one end of the last said roll; a removable bearing on the other bracket for the other end of the said roll, the last said bearing being beyond the ends of the first said rolls; and means mounted on the last said bracket and including an air cylinder for moving the last said bearing into and out of operative position.

12. The combination in a plate bending machine, of separated upright bearings; two parallel horizontal rolls rotatably mounted on the said housings; two knees mounted for vertical adjustment on the respective housings;two brackets mounted for lateral horizontal adjustment on the respective knees; a third roll; a transversely pivoted bearing on one bracket for one end of the last said roll; a removable bearing on the other bracket for the other end of the said roll; and means mounted onthe last said bracket and includ ing an air cylinder for moving the last said bearing into and out of operative position.

ROBERT W. SMITH. 

